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CDB42L55
JMP
LABEL
PURPOSE
POSITION
FUNCTION SELECTED
*+1.8V
Voltage source is +1.8 V regulator.
J31
VL
Selects source of voltage for the
VL supply
+2.5V
+3.3V
Voltage source is +2.5 V regulator.
Voltage source is +3.3 V regulator.
+1.8VB
*+1.8V
Voltage source is +1.8V from battery.
Voltage source is +1.8 V regulator.
J36
VCP
Selects source of voltage for the
VCP supply
+2.5V
Voltage source is +2.5 V regulator. .
+1.8VB
*+1.8V
Voltage source is +1.8V from battery.
Voltage source is +1.8 V regulator.
J25
VA
Selects source of voltage for the
VA supply
+2.5V
Voltage source is +2.5 V regulator. .
+1.8VB
*+1.8V
Voltage source is +1.8V from battery.
Voltage source is +1.8 V regulator.
J28
VLDO
Selects source of voltage for the
VLDO supply
+2.5V
Voltage source is +2.5 V regulator. .
+1.8VB
Voltage source is +1.8V from battery.
J52
VLDO
*SHUNTED
1 ? series resistor is shorted.
J74
J53
J48
J11
J7
J22
J5
J12
J4
J2
J3
J34
VA
VL
VCP
Shunt to RCA
Shunt to RCA
HP Detect
1.8V Buck Input
HPOUTA
HPOUTB
HPOUTA
HPOUTA(LPF)
HPOUTB
HPOUTB(LPF)
Board Power
Current Measurement
Provides RCA reference to GND
Provides RCA reference to GND
Selects how the HP_Detect pin on
CS42L55is driven
Selects power supply source for
+1.8VB
Selects test load from HPOUTA
Selects test load from HPOUTB
Connects or removes LPF for
HPOUTA
Connects or removes LPF for
HPOUTB
Selects source of Board Power
OPEN
*SHUNTED
*SHUNTED
1-2
*2 - 3
1-2
*2 - 3
1-2
2-3
1-2
2-3
1-2
*2 - 3
1-2
*2 - 3
1-2
1 ? series resistor in power supply path.
AIN2B and AIN2A RCAs are given a ground ref-
erence.
AIN1B and AIN1A RCAs are given a ground ref-
erence.
HPDETECT is driven by FPGA/GUI.
HPDETECT is driven by HP Jack line when a
stereo connection is inserted in J1.
1.8VB is derived from external input.
1.8VB is derived from AAA batteries.
32 ? load selected for HPOUTA.
16 ? load selected for HPOUTA.
32 ? load selected for HPOUTB.
16 ? load selected for HPOUTB.
No filtered output selected for HPOUTA.
RC filtered output selected for HPOUTA.
No filtered output selected for HPOUTB.
RC filtered output selected for HPOUTB.
Board powered from external +5V source con-
nected to TP9/TP10.
*2 - 3
Board powered from USB.
*Default factory settings
Table 2. Jumper Settings
18
DS773DB1
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